updating pr to fit with base.

src/Umbraco.Web/Models/BackOfficeTour.cs

@@ -1,11 +1,10 @@
-using System;
-using System.Linq;
-using System.Runtime.Serialization;
-using System.Text;
-using System.Threading.Tasks;
+using System.Runtime.Serialization;
 
 namespace Umbraco.Web.Models
 {
+    /// <summary>
+    /// A model representing a tour.
+    /// </summary>
     [DataContract(Name = "tour", Namespace = "")]
     public class BackOfficeTour
     {
@@ -15,6 +14,8 @@ namespace Umbraco.Web.Models
         public string Alias { get; set; }
         [DataMember(Name = "group")]
         public string Group { get; set; }
+        [DataMember(Name = "groupOrder")]
+        public int GroupOrder { get; set; }
         [DataMember(Name = "allowDisable")]
         public bool AllowDisable { get; set; }
         [DataMember(Name = "steps")]